Home / 20,336.05-30,505.02-7,189.75

Finding the Fourth Proportional to 20,336.05, 30,505.02 and 7,189.75

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Solution

The fourth proportional to 20,336.05, 30,505.02 and 7,189.75 is: 10,784.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.05 : 30,505.02 = 7,189.75 : x
  2. Step 2: Convert to fraction form
    20,336.05/30,505.02 = 7,189.75/x
  3. Step 3: Cross multiply
    20,336.05x = 30,505.02 × 7,189.75
  4. Step 4: Simplify right side
    20,336.05x = 219,323,467.55
  5. Step 5: Solve for x
    x = 219,323,467.55/20,336.05
  6. Step 6: Final answer
    x = 10,784.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.